If you own a thermometer it is important to know if they are giving accurate readings. One way to do that is to keep them calibrated and check them every once in a while to see any shortcomings or ambiguous behavior. Here we list some methods and points to keep in mind when calibrating one at home.
Know your Thermometer
The type of thermometer you have dictates the method you will be applying. Analog thermometers and digital thermometer are the ones that are most commonly used and therefore we will tell you some ways to calibrate them.
- It is easier these days with a digital thermometer that allows resetting with a simple reset button.
- The old ones can be reset manually by remembering the offset that it gave you.
- Use of factory-calibrated thermometer also means that they can lose some precision over time.
Using the Freezing Point of Water
Fortunately enough we can use some of the physics or science that was taught at school. We know that the freezing point of water is zero degrees Celsius. So we will use this property to rest our thermometer now.
- Get a glass full of ice; let it sit for some time to get cold water out of it.
- Stir the ice cubes and let it sit for like 2 minutes, not more.
- Stir it again and insert your thermometer into it.
- The temperature should read 32°F or 0°C.
- If there is any difference, read it and offset your thermometer appropriately.
The Boiling Point of Water
Once we know the science we have been said that water freezes at zero and boils at 100. These two were universal truths on the surface of the earth (varies with altitude) and we can use this for our purpose here.
- Boil a pot of distilled water if possible.
- Once the water begins to boil, insert your thermometer, carefully and do not touch the bottom or sides.
- Read the temperature on it and it should read 212°F or 100°C.
- Once again if there is any difference, record it and remember to offset it when taking your readings.
Calibrating Kitchen Thermometers
In case of a kitchen thermometer, the accuracy of the readings will not hurt you much. The accuracy is controlled mostly for medical diagnosis.
- You can use any of the two methods given above to calibrate it.
- The method is straightforward as mentioned above.
Keep in Mind the Points Below
Digital and analog thermometers vary a lot. You must keep a check every six months or so.
- The modern thermometers that used digital electronics might have their own functionality.
- You may also have to replace their batteries if these are not working fine.
- Analog can use a tape to mark the new reset.
- Always make sure that the thermometer only touches the ice cubed water surrounding and not the glass or the container it is in.
Remember about what I said about the surface of the earth. That is, with altitude that boiling point of ware will vary, so keep a chart with you depending on your geographical location.
How do I know if my meat thermometer is accurate?
- Fill a tall glass with ice and add cold water.
- Place and hold the thermometer in the ice water for 30 seconds without touching the sides or bottom of the glass.
- If the thermometer reads 32°F, it is reading correctly and can be used.
What is the best way to calibrate a thermometer?
What is the easiest and safest way to calibrate a thermometer?
How do you calibrate a stem thermometer?
Why do you calibrate a thermometer?
Can all thermometers be calibrated?
How often do thermometers need to be calibrated?
Thermometers used frequently must be calibrated frequently (weekly or monthly). Follow manufacturer’s instructions for taking temperatures. Always calibrate a new thermometer, one that has been dropped on a hard surface, or one with a temperature reading that is off by more than +/- 2°F (+/-0.5°C).
How do you calibrate pressure?
Do Pressure transducers need to be calibrated?
Can pressure gauge be calibrated?
How often should a pressure gauge be calibrated?
Do multimeters need to be calibrated?
What is calibration frequency?
How much does it cost to calibrate a multimeter?
|Model||Calibration Type, Price|
|Details||177||Standard Calibration $80.00|
|Details||179||Standard Calibration $80.00|
|Details||187||Standard Calibration $60.00|
|Details||189||Standard Calibration $60.00|
How do I know if my multimeter is calibrated?
Do Fluke meters need to be calibrated?
How often should you calibrate a Fluke Multimeter?
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